Table 1:

UCSF intracranial dural arteriovenous fistula cohort with single fistulas versus subset with confirmed enlarging, de novo, multiple, or recurrent fistulas

	Enlarging, De Novo, Multiple, or Recurrent Fistulas (n = 34)	Remainder of UCSF Intracranial DAVFs (n = 545)	P Value^{^a}
Mean age at dx ± SD	45 ± 23 y	53 ± 20 y	.11^{^b}
Median age (range)	52.5 y (0.2–77 y)	56 y (0–87 y)
Male	35%	49%	.16^{^c}

Note:—UCSF indicates University of California at San Francisco; dx, diagnosis.
↵a Enlarging, de novo, multiple, or recurrent vs remainder of UCSF cohort.
↵b Two-tailed t test.
↵c Two-sided Fisher exact test.